Research Center for Economy of Upper Reaches of the Yangtse River/School of Economics, Chongqing Technology and Business University, Chongqing 400067, China.
Business School, Hohai University, Nanjing 211100, China.
Int J Environ Res Public Health. 2019 Aug 26;16(17):3105. doi: 10.3390/ijerph16173105.
Despite achieving remarkable development, China's agricultural economy has been under severe environmental pressure. Based on previous studies, the present study further considers the sources of agricultural carbon emissions in depth, estimates China's agricultural carbon emissions from 1997 to 2016, and analyzes the agricultural pollution faced by China and its provinces. The study estimates the amount and intensity of agricultural carbon emissions in China from five carbon sources-agricultural materials, rice planting, soil NO, livestock and poultry farming, and straw burning-and analyzes their spatial and temporal characteristics. The following results were obtained: (1) between 1997 and 2016, the amount of agricultural carbon emissions in China generally increased, while the intensity of agricultural carbon emissions decreased; (2) in the same period, the amount of carbon emissions from each category of carbon source generally increased, with the exception of rice planting; however, the amount of emissions fluctuated; (3) the amount and intensity of carbon emissions varied greatly among provinces; (4) the emissions from different categories of carbon source showed different concentration trends and agglomeration forms; (5) China's agricultural carbon emissions showed obvious spatial correlation, which overall was high-high agglomeration; however, its carbon emissions gradually weakened, and the spatial agglomeration of agricultural carbon emissions in each province changed between 1997 and 2016.
尽管取得了显著的发展，中国的农业经济一直面临着严峻的环境压力。基于以往的研究，本研究进一步深入考虑了农业碳排放的来源，估计了中国 1997 年至 2016 年的农业碳排放，并分析了中国及其各省面临的农业污染。本研究从农业物料、水稻种植、土壤 NO、畜禽养殖和秸秆燃烧五个碳源估计了中国农业碳排放的数量和强度，并分析了其时空特征。结果表明：（1）1997 年至 2016 年，中国农业碳排放总量呈增长趋势，而农业碳排放强度呈下降趋势；（2）同期，除水稻种植外，各碳源类别碳排放量均呈增长趋势，但排放量波动较大；（3）各省之间的碳排放量和强度差异很大；（4）不同类别的碳源排放呈现出不同的集聚趋势和集聚形式；（5）中国农业碳排放具有明显的空间相关性，总体上呈高高集聚，但逐渐减弱，各省份农业碳排放的空间集聚在 1997 年至 2016 年间发生了变化。
